\documentclass[dvipdfmx,margin=2mm]{standalone}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
\draw [help lines] (0,0) grid (12,12);
\draw [help lines,dashed] (0,12) -- (12,0);
\draw [help lines,dashed] (1,12) -- (12,1);
\draw [help lines,dashed] (2,12) -- (12,2);
\draw [help lines,dashed] (3,12) -- (12,3);
\draw [help lines,dashed] (4,12) -- (12,4);
\draw [help lines,dashed] (5,12) -- (12,5);
\draw [help lines,dashed] (6,12) -- (12,6);
\draw [help lines,dashed] (7,12) -- (12,7);
\draw [help lines,dashed] (8,12) -- (12,8);
\draw [help lines,dashed] (9,12) -- (12,9);
\draw [help lines,dashed] (10,12) -- (12,10);
\draw [help lines,dashed] (11,12) -- (12,11);
\draw [ultra thick] (0,9) -- (3,9) -- (4,8) -- (5,8) -- (6,7) -- (8,7) -- (9,11) -- (10,11) -- (11,10);
\end{tikzpicture}
\end{document}
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